Spent yesterday drawing pretty pictures of bacterial genomes with Perl, BioPerl, and R. Given the genetic sequence of different bugs (ACCTGTCGATGCTA...) we're looking for fingerprints in the composition of those sequences. Pick out the 200 most frequest 5-letter "words" (oligos), sort and plot those, and maybe we can see the fingerprint of each bug.
It seems to work. The black line is E. coli., which is very different from Staph. aur. (red and green) and Staph. epi. (blue). You'll also notice that the 2 Staph aur. lines are very close to each other, since they're almost identical; they're very similar to yet distinct from Staph. epi; and distant from E. coli.
Cool, huh? The details (username: guest, password: guest)